Hole saw set, 5 pieces, HSS cobalt hole saw Ø16/18.5/20/25/30 mm, high-speed steel hole saw alloy, steel, stainless steel, suitable for wood, plastic, metal

General description The HSS cobalt hole saw set includes 5 pieces with diameters of 16mm, 18.5mm, 20mm, 25mm, and 30mm. Made from high-speed steel, these hole saws offer high hardness and wear resistance, ensuring durability and precision in cutting. The set is designed for efficient cutting through various materials including wood, plastic, metal, and stainless steel. Technical specifications Material: HSS6542 Hardness: HRC 65 Surface treatment: titanium plating Hole Saw Diameters: 16mm, 18.5mm, 20mm, 25mm, 30mm Shank Diameter: 8mm Hole Saw Blade Length: 65mm Packing Weight: 308g Installation The hole saws can be installed on various drills including bench drills, electromagnetic drills, pistol drills, and impact drills. Each hole cutter comes with an Allen key for easy removal of the pilot drill. Usage Use oil or water to reduce temperature when drilling hard materials to prevent drill bit breakage. Wear protective goggles and a mask when working to ensure safety. For prolonged use, consider wearing earplugs to minimize noise impact. Remove anti-rust oil after use for longer service life. Choose a lower speed for continuous cutting and avoid strong impacts on the edge of the hole saw. Use coolant when processing hard materials.